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The National Palace, (or Palacio Nacional in Spanish), is the seat of the federal executive in Mexico. It is located on Mexico City's main square, the Plaza de la Constitución (El Zócalo). This site has been a palace for the ruling class of Mexico since the Aztec empire, and much of the current palace's building materials are from the original one that belonged to Moctezuma II.
 
Used and classified as a Government Building, the NationalPalace, with its red tezontle facade fills the entire east side of the Zócalo, measuring over 200 meters long. It is home to some of the offices of both the Federal Treasury and the National Archives.

The facade is bordered on the north and south by two towers and include three main doorways, each of which lead to a different part of the building. The central door leads to the main patio which is surrounded by Baroquearches. Only the balustrade of this area has been remodeled, conserving themurals by Diego Rivera that adorn the main stairwell and the walls of the second floor. 

 In the stairwell is a mural depicting the history of Mexico from 1521 to 1930 and covers an area of 450 m² (4800 ft²). These murals were painted between 1929 and 1935, jointly titled "The Epic of the Mexican People". The work is divided like a triptych with each being somewhat autonomous. 

The right-hand wall contains murals depicting pre-Hispanic Mexico and centers around the life of the Aztec god Quetzalcóatl. Quetzalcóatl appears in the mural as a star, a god, and a human being. Created by serpents, he sails through space as a star that accompanies the sun at night. 

Quetzalcóatl then assumes a human body to teach the Aztec people as their king and patriarch. Last, when he sacrifices his blood to give life to men, he returns to the sky having completed his earthly cycle. Once he leaves the earth, Quetzalcóatl assumes the shape the morning star, called Tlahuizcalpantecuhtli. The cycle that he undergoes signifies the continuous cycle of life. Rivera's creation of a Mexican identity helps to continue the reform that began with the Mexican Revolution of 1910. Before this time, any individualism from the Indians was discouraged as well as any allusion toward Aztec origins. The mural aims to dismiss any idea of inferiority. In the middle and largest panel, the Conquest is depicted with its ugliness, such as rape and torture, as well as priests defending the rights of the indigenous people. The battle for independence occupies the uppermost part of this panel in the arch. The American and French invasions are represented below this, as well as the Reform period and the Revolution. 

The left-hand panel is dedicated to early and mid-20th century, criticizing the status quo and depicting a Marxist kind of utopia, featuring the persons of Plutarco Elías Calles, John D. Rockefeller, Harry Sinclair, William Durant, J.P. Morgan,Cornelius Vanderbilt and Andrew Mellon as well as Karl Marx. This part of the mural also includes Frida Kahlo, Diego's wife. This mural reflects Diego's own personal views about Mexico's history and the indigenous people of the country in particular.